Mold for artificial teeth



No; 6I3,7l|. Patented Nov. 8, I898.

A. PAGE & 8. S. BLOOM.

MOLD FOR ARTIFICIAL TEETH.

A plication filed July 15, 1898.)

(No Model.)

Witnesse Inventor.

T Attorney.

UNITED STATES PATENT OEErcE.

ALFRED PAGE AND SAMUEL S. BLOOM, OF PHILADELPHIA, PENNSYLVANIA.

MOLD FOR ARTIFICIAL TEETH.

SPECIFICATION forming part of Letters Patent No. 613,711, dated November 8, 1898. Application filed July 18,1898. Serial No. 686,254. (No model.)

To CLZZ whom it may conccrn: I Arepresents the bottom section of the mold, 50

Be it known that we, ALFRED PAGE and SAMUEL S. BLooM, citizens of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Molds for Forming Artificial Teeth, of which the following is a specification, reference being had therein to the accompanying drawings.

Our invention relates to artificial teeth,and has especial reference to that class of artificial teeth in which the pins that fasten the teeth to the vulcanite plate are made of German silver and soldered to a strip or ring-of platinum that has been embedded in the body of each tooth before burning.

The object of our improvement is to so construct the mold in which the teeth are formed that during the process of molding strips or rings of platinum or any other suitable material may be embedded in the body of the tooth at or near the bottom of an opening adapted to receive the pin that connects the tooth to the vulcanite plate in a position to form a head for the pin and present a clean soldering-surface to the inner part of said pin. To accomplishthe desired result, the mold for forming the tooth is first constructed in the usual way, after which there are fastened in the bottom part of said mold upright posts that project some distance beyond the inner surface thereof. Upon the top of these projecting posts the small strips or rings of platinum or any other suitable material that it is desired to embed in the teeth are temporarily secured, after which the tooth-forming material is placed in the mold and the molded teeth removed therefrom in theusual way.

a sectional view through our improved mold as on line w a; of Fig. 2. Fig. 2 is a plan View of one-half of the bottom part of a mold. Fig. 3'shows one of the upright posts removed from the mold and the strip of platinum to be embedded in the tooth. Figs. 4 and 5 show modified forms of the posts and of the embedded pin-head.

In the accompanying drawings, Figure 1 is into which the upright projecting posts a a are secured.

A is the top section of the mold, and B the tooth inside of the mold.

The top part a of the post a, projecting beyond the surface of the mold,is made slightly tapering, so that when the mold is taken apart the teeth can be easily removed from said post.

a is a short projecting point on the extreme end of the post a.

b is a small strip or plate of platinum having therein a central opening that fits over the projecting point (t on the post a. If for any purpose it is desired to make the hole in the strip 1) larger, the projecting point a on the post a should also be made larger. Instead of the flat strip b a small platinum ring or washer b, fitting over the form of post shown in Fig. 5, may be used. When the top of the post is made fiat, as shown in Fig.

5, the strip or plate I) need have no central opening and may be temporarily secured to the post in any way, either by gluing it thereon or forming in the platinum strip a slight countersunk depression that will snugly fit over the top of the post. In the form of post shown inFig. 4 the top portion has therein a narrow slot, into which the platinum strip b is fitted edgewise.

As the sole purpose of the strip b or ring I) is to form a head for the inner end of the pin that connects the vulcanite plate to the tooth, it is not necessary that said stripv or ring he of any particular shape, and any desired formation that will answer the purpose can be used.

Having thus described our invention, what we claim as new is- 1. A mold for artificial teeth having secured in the bottom part thereof an upright projecting post, temporarily supporting a detachable piece of metal that will, during the process of molding, be embedded in the tooth and form a head to which the inner end 9 5' of the pin that connects the tooth to the vulcanite plate, may be soldered, substantially as shown.

2. A mold for artificial teeth having in the In testimony whereof We ai'fix our signabottom part thereof an upright projecting tures in presence of two witnesses.

post, in combination with a metallic ring ALFRED PAGE.

adapted to fit loosely upon the top of the post SAMUEL S. BLOOM. 5 and be embedded in the tooth during the \Vitnesses:

process of molding, substantially as shown J. BOYD COATES,

and for the purpose described. THOS. D. MOWLDS. 

